Münster 1999 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 21: Postersitzung III: Hochfrequenzeigenschaften (1-4), Amorphe Systeme (5-9), Borkarbide (10-18), Quantenflüssigkeiten (19-25), Dünne Filme (26-49), Vortexdynamik, Pinning (50-63), M-I-Überg
änge, quantenkritische Ph
änomene (64-89)

TT 21.79: Poster

Donnerstag, 25. März 1999, 14:30–18:00, Foy

Transport properties of disordered interacting spinful electrons — •Svetlana Kilina, Thomas Vojta, and Michael Schreiber — Institut für Physik, Technische Universität, D-09107 Chemnitz

We study the influence of the electron spin on the properties of disordered interacting electrons. The investigations are based on a generalization of the quantum Coulomb glass. This model describes spinful electrons in a random potential interacting via a long-range Coulomb potential (which is necessary for a complete description of the insulating phase). We are particularly interested in the localization and transport properties. The corresponding physical quantities, i.e. conductance, single-particle return probability, and Fock-space participation number, are calculated by numerically exact diagonalization. The results indicate that the electron spin can drastically influence the transport properties.